// Copyright (c) 2008 Davy Brion (ralinx@davybrion.com)
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// 
//     * Redistributions of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice,
//       this list of conditions and the following disclaimer in the documentation
//       and/or other materials provided with the distribution.
//     * Neither the name of Davy Brion nor the names of the
//       contributors may be used to endorse or promote products derived from this
//       software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using Albatross.Common;
using Albatross.Common.Messaging;
using System;

namespace Albatross.ServerSide.Messaging
{
	public abstract class RequestHandler : Disposable, IRequestHandler
	{	
		public abstract void OnHandling( Request request );
		public abstract Response Handle(Request request);
		public abstract void OnHandled();
		/// <summary>
		/// Default implementation is empty
		/// </summary>
		protected override void DisposeManagedResources() {}

		public virtual Response OnException(System.Exception ex)
		{
			return null;
		}
		


	}

	public abstract class RequestHandler<TRequest> : RequestHandler, IRequestHandler<TRequest> where TRequest : Request
	{
		public override Response Handle(Request request)
		{
			return Handle((TRequest)request);
		}

		public abstract Response Handle(TRequest request);

		public override void OnHandling( Request request )
		{
			OnHandling( ( TRequest )request );
		}

		public virtual void OnHandling( TRequest request )
		{
		}

		public override void OnHandled()
		{
		}
	}
}